That's odd, have you tried clearing your browser's cache and cookies? Here's how: https://goo.gl/dwzcyo . Also, try using different browser or Incognito mode. This usually clears things up but let us know if it's still not working!
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more